Recent content by dailydrivencrawler

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    Midnight Metalworks dana 300 rock box assembly thread

    I will have to edit some when I get a chance to fully read back thru. But if there are any questions about assembling our cases. Let me know fasted route is thru our business messenger on Facebook or instgram.
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    Midnight Metalworks dana 300 rock box assembly thread

    Once the rear output is preloaded. Install the rear yoke using rtv under the nut. The second pic shows top seal is for the stock rear output the bottom 2 are the most common used on a 32 spline depending on your yokes diameter.
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    Midnight Metalworks dana 300 rock box assembly thread

    The install the bearing race in the preload cap. In newer cases its a slip fit. In older cases it is a press fit. Install the front yoke. If using a stock yoke remove the dust shield. Use rtv under the washer and and nut that hold the yoke on. Shift the front output into neutral. See if there is...
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    Midnight Metalworks dana 300 rock box assembly thread

    At this point both rails should shift super easy while your spinning the output that your shifting. Install the detent box it can be installed with the set screws facing up or down. Install ball then a spring followed by a set screw with a jam nut. If you case came with springs that are...
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the rear output housing if using a aa or stock one do not rtv till you get the rear preload shimmed correctly. The jb conversions on you can change the shims with the housing in place. Install the shift interlock pin. You might have to align the to rail by twisting them slighty. Secure...
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the case lid. Make sure the seals don't get tweaked if the start to you use a pick and get them straightened out before you push the case lid down all the way. Then us the 1.25" long Allen bolts to bolt the lid on I tighten them by hand till the are snug.i do cheat and start them by hand...
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the bearing cage onto the rear of the front output shaft. I use a piece of tube and pound it on. The is the part number for the rear bearing on the front output shaft. If you are using a stock 26 spline the same bearing work on the front side of the front output shaft. Make sure the...
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the large gear on the front output. Install the rear output shaft per the instructions of the manufacturer.
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    Midnight Metalworks dana 300 rock box assembly thread

    I try to ream all the shift forks out with a half inch drill bit but sometimes it gets missed sonic your shift forks don't slide on the shift rails easily run a 1/2" drill bit thru them just he warn this part is chromoly so clamp them in a vice ore they can beat you up. The slotted rail always...
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the second thrust bearing silver side up with alignment tab facing towards the top of the case. Don't be like me and wait to press the front out bearing race in the front output cover before you install it. Install the front output assembly minus the large gear and the rear bearing.
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the first layer of bearings until it is full loaded the install the middle bearing spacer. Then load the second layer bearing till full loaded top with the final spacer ring.
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    Midnight Metalworks dana 300 rock box assembly thread

    Install the intermediate pin which must be under 5 inchs long. The stock one vary in length. We offer trimmed ones down on the website. Put some red tacky grease on the silver side of thrust bearing. Put the alignment tab facing up. Install the bearing spacer and stick the intermediate gear in.
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    Midnight Metalworks dana 300 rock box assembly thread

    If you don't need to replace the seal and bearing you don't need to follow this step. You can put the whole assembly in the case. The large snap ring hold the bearing and input shaft in the input housing install the input gear with the small snap ring.
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    Midnight Metalworks dana 300 rock box assembly thread

    After sticking it in the case I noticed the the input needed a new seal, and bearing. Then press the bearing race in the front output cover. Then install front output cover in the case this is the 26 spline version no sealant need on this due to the oring.. the first few cases didn't have the o...
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    Midnight Metalworks dana 300 rock box assembly thread

    I had to build a case for a Customer using his donor today to I thought I would do a step by step thread for people. The customers donor case had a advanced adapters 32 spline rear output and 4 to 1 teraflex gears. First strip the stock case there are good YouTube videos that cover this. Second...
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